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-rw-r--r--arch/blackfin/kernel/traps.c367
1 files changed, 222 insertions, 145 deletions
diff --git a/arch/blackfin/kernel/traps.c b/arch/blackfin/kernel/traps.c
index 9a9d5083acfd..1aa2c788e228 100644
--- a/arch/blackfin/kernel/traps.c
+++ b/arch/blackfin/kernel/traps.c
@@ -34,20 +34,19 @@
#include <linux/fs.h>
#include <asm/traps.h>
#include <asm/cacheflush.h>
+#include <asm/cplb.h>
#include <asm/blackfin.h>
#include <asm/irq_handler.h>
#include <linux/irq.h>
#include <asm/trace.h>
#include <asm/fixed_code.h>
-#include <asm/dma.h>
#ifdef CONFIG_KGDB
-# include <linux/debugger.h>
# include <linux/kgdb.h>
# define CHK_DEBUGGER_TRAP() \
do { \
- CHK_DEBUGGER(trapnr, sig, info.si_code, fp, ); \
+ kgdb_handle_exception(trapnr, sig, info.si_code, fp); \
} while (0)
# define CHK_DEBUGGER_TRAP_MAYBE() \
do { \
@@ -59,6 +58,15 @@
# define CHK_DEBUGGER_TRAP_MAYBE() do { } while (0)
#endif
+
+#ifdef CONFIG_VERBOSE_DEBUG
+#define verbose_printk(fmt, arg...) \
+ printk(fmt, ##arg)
+#else
+#define verbose_printk(fmt, arg...) \
+ ({ if (0) printk(fmt, ##arg); 0; })
+#endif
+
/* Initiate the event table handler */
void __init trap_init(void)
{
@@ -67,10 +75,19 @@ void __init trap_init(void)
CSYNC();
}
-unsigned long saved_icplb_fault_addr, saved_dcplb_fault_addr;
+/*
+ * Used to save the RETX, SEQSTAT, I/D CPLB FAULT ADDR
+ * values across the transition from exception to IRQ5.
+ * We put these in L1, so they are going to be in a valid
+ * location during exception context
+ */
+__attribute__((l1_data))
+unsigned long saved_retx, saved_seqstat,
+ saved_icplb_fault_addr, saved_dcplb_fault_addr;
static void decode_address(char *buf, unsigned long address)
{
+#ifdef CONFIG_DEBUG_VERBOSE
struct vm_list_struct *vml;
struct task_struct *p;
struct mm_struct *mm;
@@ -178,16 +195,39 @@ static void decode_address(char *buf, unsigned long address)
done:
write_unlock_irqrestore(&tasklist_lock, flags);
+#else
+ sprintf(buf, " ");
+#endif
}
asmlinkage void double_fault_c(struct pt_regs *fp)
{
console_verbose();
oops_in_progress = 1;
+#ifdef CONFIG_DEBUG_VERBOSE
printk(KERN_EMERG "\n" KERN_EMERG "Double Fault\n");
- dump_bfin_process(fp);
- dump_bfin_mem(fp);
- show_regs(fp);
+#ifdef CONFIG_DEBUG_DOUBLEFAULT_PRINT
+ if (((long)fp->seqstat & SEQSTAT_EXCAUSE) == VEC_UNCOV) {
+ char buf[150];
+ decode_address(buf, saved_retx);
+ printk(KERN_EMERG "While handling exception (EXCAUSE = 0x%x) at %s:\n",
+ (int)saved_seqstat & SEQSTAT_EXCAUSE, buf);
+ decode_address(buf, saved_dcplb_fault_addr);
+ printk(KERN_NOTICE " DCPLB_FAULT_ADDR: %s\n", buf);
+ decode_address(buf, saved_icplb_fault_addr);
+ printk(KERN_NOTICE " ICPLB_FAULT_ADDR: %s\n", buf);
+
+ decode_address(buf, fp->retx);
+ printk(KERN_NOTICE "The instruction at %s caused a double exception\n",
+ buf);
+ } else
+#endif
+ {
+ dump_bfin_process(fp);
+ dump_bfin_mem(fp);
+ show_regs(fp);
+ }
+#endif
panic("Double Fault - unrecoverable event\n");
}
@@ -259,34 +299,42 @@ asmlinkage void trap_c(struct pt_regs *fp)
return;
else
break;
+ /* 0x03 - User Defined, userspace stack overflow */
+ case VEC_EXCPT03:
+ info.si_code = SEGV_STACKFLOW;
+ sig = SIGSEGV;
+ verbose_printk(KERN_NOTICE EXC_0x03(KERN_NOTICE));
+ CHK_DEBUGGER_TRAP_MAYBE();
+ break;
+ /* 0x02 - KGDB initial connection and break signal trap */
+ case VEC_EXCPT02:
#ifdef CONFIG_KGDB
- case VEC_EXCPT02 : /* gdb connection */
info.si_code = TRAP_ILLTRAP;
sig = SIGTRAP;
CHK_DEBUGGER_TRAP();
return;
-#else
- /* 0x02 - User Defined, Caught by default */
#endif
- /* 0x03 - User Defined, userspace stack overflow */
- case VEC_EXCPT03:
- info.si_code = SEGV_STACKFLOW;
- sig = SIGSEGV;
- printk(KERN_NOTICE EXC_0x03(KERN_NOTICE));
- CHK_DEBUGGER_TRAP();
+ /* 0x04 - User Defined */
+ /* 0x05 - User Defined */
+ /* 0x06 - User Defined */
+ /* 0x07 - User Defined */
+ /* 0x08 - User Defined */
+ /* 0x09 - User Defined */
+ /* 0x0A - User Defined */
+ /* 0x0B - User Defined */
+ /* 0x0C - User Defined */
+ /* 0x0D - User Defined */
+ /* 0x0E - User Defined */
+ /* 0x0F - User Defined */
+ /* If we got here, it is most likely that someone was trying to use a
+ * custom exception handler, and it is not actually installed properly
+ */
+ case VEC_EXCPT04 ... VEC_EXCPT15:
+ info.si_code = ILL_ILLPARAOP;
+ sig = SIGILL;
+ verbose_printk(KERN_NOTICE EXC_0x04(KERN_NOTICE));
+ CHK_DEBUGGER_TRAP_MAYBE();
break;
- /* 0x04 - User Defined, Caught by default */
- /* 0x05 - User Defined, Caught by default */
- /* 0x06 - User Defined, Caught by default */
- /* 0x07 - User Defined, Caught by default */
- /* 0x08 - User Defined, Caught by default */
- /* 0x09 - User Defined, Caught by default */
- /* 0x0A - User Defined, Caught by default */
- /* 0x0B - User Defined, Caught by default */
- /* 0x0C - User Defined, Caught by default */
- /* 0x0D - User Defined, Caught by default */
- /* 0x0E - User Defined, Caught by default */
- /* 0x0F - User Defined, Caught by default */
/* 0x10 HW Single step, handled here */
case VEC_STEP:
info.si_code = TRAP_STEP;
@@ -301,8 +349,8 @@ asmlinkage void trap_c(struct pt_regs *fp)
case VEC_OVFLOW:
info.si_code = TRAP_TRACEFLOW;
sig = SIGTRAP;
- printk(KERN_NOTICE EXC_0x11(KERN_NOTICE));
- CHK_DEBUGGER_TRAP();
+ verbose_printk(KERN_NOTICE EXC_0x11(KERN_NOTICE));
+ CHK_DEBUGGER_TRAP_MAYBE();
break;
/* 0x12 - Reserved, Caught by default */
/* 0x13 - Reserved, Caught by default */
@@ -323,44 +371,43 @@ asmlinkage void trap_c(struct pt_regs *fp)
case VEC_UNDEF_I:
info.si_code = ILL_ILLOPC;
sig = SIGILL;
- printk(KERN_NOTICE EXC_0x21(KERN_NOTICE));
- CHK_DEBUGGER_TRAP();
+ verbose_printk(KERN_NOTICE EXC_0x21(KERN_NOTICE));
+ CHK_DEBUGGER_TRAP_MAYBE();
break;
/* 0x22 - Illegal Instruction Combination, handled here */
case VEC_ILGAL_I:
info.si_code = ILL_ILLPARAOP;
sig = SIGILL;
- printk(KERN_NOTICE EXC_0x22(KERN_NOTICE));
- CHK_DEBUGGER_TRAP();
+ verbose_printk(KERN_NOTICE EXC_0x22(KERN_NOTICE));
+ CHK_DEBUGGER_TRAP_MAYBE();
break;
/* 0x23 - Data CPLB protection violation, handled here */
case VEC_CPLB_VL:
info.si_code = ILL_CPLB_VI;
sig = SIGBUS;
- printk(KERN_NOTICE EXC_0x23(KERN_NOTICE));
- CHK_DEBUGGER_TRAP();
+ verbose_printk(KERN_NOTICE EXC_0x23(KERN_NOTICE));
+ CHK_DEBUGGER_TRAP_MAYBE();
break;
/* 0x24 - Data access misaligned, handled here */
case VEC_MISALI_D:
info.si_code = BUS_ADRALN;
sig = SIGBUS;
- printk(KERN_NOTICE EXC_0x24(KERN_NOTICE));
- CHK_DEBUGGER_TRAP();
+ verbose_printk(KERN_NOTICE EXC_0x24(KERN_NOTICE));
+ CHK_DEBUGGER_TRAP_MAYBE();
break;
/* 0x25 - Unrecoverable Event, handled here */
case VEC_UNCOV:
info.si_code = ILL_ILLEXCPT;
sig = SIGILL;
- printk(KERN_NOTICE EXC_0x25(KERN_NOTICE));
- CHK_DEBUGGER_TRAP();
+ verbose_printk(KERN_NOTICE EXC_0x25(KERN_NOTICE));
+ CHK_DEBUGGER_TRAP_MAYBE();
break;
/* 0x26 - Data CPLB Miss, normal case is handled in _cplb_hdr,
error case is handled here */
case VEC_CPLB_M:
info.si_code = BUS_ADRALN;
sig = SIGBUS;
- printk(KERN_NOTICE EXC_0x26(KERN_NOTICE));
- CHK_DEBUGGER_TRAP();
+ verbose_printk(KERN_NOTICE EXC_0x26(KERN_NOTICE));
break;
/* 0x27 - Data CPLB Multiple Hits - Linux Trap Zero, handled here */
case VEC_CPLB_MHIT:
@@ -368,11 +415,11 @@ asmlinkage void trap_c(struct pt_regs *fp)
sig = SIGSEGV;
#ifdef CONFIG_DEBUG_HUNT_FOR_ZERO
if (saved_dcplb_fault_addr < FIXED_CODE_START)
- printk(KERN_NOTICE "NULL pointer access\n");
+ verbose_printk(KERN_NOTICE "NULL pointer access\n");
else
#endif
- printk(KERN_NOTICE EXC_0x27(KERN_NOTICE));
- CHK_DEBUGGER_TRAP();
+ verbose_printk(KERN_NOTICE EXC_0x27(KERN_NOTICE));
+ CHK_DEBUGGER_TRAP_MAYBE();
break;
/* 0x28 - Emulation Watchpoint, handled here */
case VEC_WATCH:
@@ -390,8 +437,8 @@ asmlinkage void trap_c(struct pt_regs *fp)
case VEC_ISTRU_VL: /* ADSP-BF535 only (MH) */
info.si_code = BUS_OPFETCH;
sig = SIGBUS;
- printk(KERN_NOTICE "BF535: VEC_ISTRU_VL\n");
- CHK_DEBUGGER_TRAP();
+ verbose_printk(KERN_NOTICE "BF535: VEC_ISTRU_VL\n");
+ CHK_DEBUGGER_TRAP_MAYBE();
break;
#else
/* 0x29 - Reserved, Caught by default */
@@ -400,22 +447,21 @@ asmlinkage void trap_c(struct pt_regs *fp)
case VEC_MISALI_I:
info.si_code = BUS_ADRALN;
sig = SIGBUS;
- printk(KERN_NOTICE EXC_0x2A(KERN_NOTICE));
- CHK_DEBUGGER_TRAP();
+ verbose_printk(KERN_NOTICE EXC_0x2A(KERN_NOTICE));
+ CHK_DEBUGGER_TRAP_MAYBE();
break;
/* 0x2B - Instruction CPLB protection violation, handled here */
case VEC_CPLB_I_VL:
info.si_code = ILL_CPLB_VI;
sig = SIGBUS;
- printk(KERN_NOTICE EXC_0x2B(KERN_NOTICE));
- CHK_DEBUGGER_TRAP();
+ verbose_printk(KERN_NOTICE EXC_0x2B(KERN_NOTICE));
+ CHK_DEBUGGER_TRAP_MAYBE();
break;
/* 0x2C - Instruction CPLB miss, handled in _cplb_hdr */
case VEC_CPLB_I_M:
info.si_code = ILL_CPLB_MISS;
sig = SIGBUS;
- printk(KERN_NOTICE EXC_0x2C(KERN_NOTICE));
- CHK_DEBUGGER_TRAP();
+ verbose_printk(KERN_NOTICE EXC_0x2C(KERN_NOTICE));
break;
/* 0x2D - Instruction CPLB Multiple Hits, handled here */
case VEC_CPLB_I_MHIT:
@@ -423,18 +469,18 @@ asmlinkage void trap_c(struct pt_regs *fp)
sig = SIGSEGV;
#ifdef CONFIG_DEBUG_HUNT_FOR_ZERO
if (saved_icplb_fault_addr < FIXED_CODE_START)
- printk(KERN_NOTICE "Jump to NULL address\n");
+ verbose_printk(KERN_NOTICE "Jump to NULL address\n");
else
#endif
- printk(KERN_NOTICE EXC_0x2D(KERN_NOTICE));
- CHK_DEBUGGER_TRAP();
+ verbose_printk(KERN_NOTICE EXC_0x2D(KERN_NOTICE));
+ CHK_DEBUGGER_TRAP_MAYBE();
break;
/* 0x2E - Illegal use of Supervisor Resource, handled here */
case VEC_ILL_RES:
info.si_code = ILL_PRVOPC;
sig = SIGILL;
- printk(KERN_NOTICE EXC_0x2E(KERN_NOTICE));
- CHK_DEBUGGER_TRAP();
+ verbose_printk(KERN_NOTICE EXC_0x2E(KERN_NOTICE));
+ CHK_DEBUGGER_TRAP_MAYBE();
break;
/* 0x2F - Reserved, Caught by default */
/* 0x30 - Reserved, Caught by default */
@@ -461,17 +507,17 @@ asmlinkage void trap_c(struct pt_regs *fp)
case (SEQSTAT_HWERRCAUSE_SYSTEM_MMR):
info.si_code = BUS_ADRALN;
sig = SIGBUS;
- printk(KERN_NOTICE HWC_x2(KERN_NOTICE));
+ verbose_printk(KERN_NOTICE HWC_x2(KERN_NOTICE));
break;
/* External Memory Addressing Error */
case (SEQSTAT_HWERRCAUSE_EXTERN_ADDR):
info.si_code = BUS_ADRERR;
sig = SIGBUS;
- printk(KERN_NOTICE HWC_x3(KERN_NOTICE));
+ verbose_printk(KERN_NOTICE HWC_x3(KERN_NOTICE));
break;
/* Performance Monitor Overflow */
case (SEQSTAT_HWERRCAUSE_PERF_FLOW):
- printk(KERN_NOTICE HWC_x12(KERN_NOTICE));
+ verbose_printk(KERN_NOTICE HWC_x12(KERN_NOTICE));
break;
/* RAISE 5 instruction */
case (SEQSTAT_HWERRCAUSE_RAISE_5):
@@ -481,21 +527,25 @@ asmlinkage void trap_c(struct pt_regs *fp)
printk(KERN_NOTICE HWC_default(KERN_NOTICE));
break;
}
- CHK_DEBUGGER_TRAP();
+ CHK_DEBUGGER_TRAP_MAYBE();
break;
+ /*
+ * We should be handling all known exception types above,
+ * if we get here we hit a reserved one, so panic
+ */
default:
- info.si_code = TRAP_ILLTRAP;
- sig = SIGTRAP;
- printk(KERN_EMERG "Caught Unhandled Exception, code = %08lx\n",
+ oops_in_progress = 1;
+ info.si_code = ILL_ILLPARAOP;
+ sig = SIGILL;
+ verbose_printk(KERN_EMERG "Caught Unhandled Exception, code = %08lx\n",
(fp->seqstat & SEQSTAT_EXCAUSE));
- CHK_DEBUGGER_TRAP();
+ CHK_DEBUGGER_TRAP_MAYBE();
break;
}
BUG_ON(sig == 0);
if (sig != SIGTRAP) {
- unsigned long *stack;
dump_bfin_process(fp);
dump_bfin_mem(fp);
show_regs(fp);
@@ -503,7 +553,7 @@ asmlinkage void trap_c(struct pt_regs *fp)
/* Print out the trace buffer if it makes sense */
#ifndef CONFIG_DEBUG_BFIN_NO_KERN_HWTRACE
if (trapnr == VEC_CPLB_I_M || trapnr == VEC_CPLB_M)
- printk(KERN_NOTICE "No trace since you do not have "
+ verbose_printk(KERN_NOTICE "No trace since you do not have "
"CONFIG_DEBUG_BFIN_NO_KERN_HWTRACE enabled\n"
KERN_NOTICE "\n");
else
@@ -512,20 +562,22 @@ asmlinkage void trap_c(struct pt_regs *fp)
if (oops_in_progress) {
/* Dump the current kernel stack */
- printk(KERN_NOTICE "\n" KERN_NOTICE "Kernel Stack\n");
+ verbose_printk(KERN_NOTICE "\n" KERN_NOTICE "Kernel Stack\n");
show_stack(current, NULL);
-
print_modules();
#ifndef CONFIG_ACCESS_CHECK
- printk(KERN_EMERG "Please turn on "
+ verbose_printk(KERN_EMERG "Please turn on "
"CONFIG_ACCESS_CHECK\n");
#endif
panic("Kernel exception");
} else {
+#ifdef CONFIG_VERBOSE_DEBUG
+ unsigned long *stack;
/* Dump the user space stack */
stack = (unsigned long *)rdusp();
- printk(KERN_NOTICE "Userspace Stack\n");
+ verbose_printk(KERN_NOTICE "Userspace Stack\n");
show_stack(NULL, stack);
+#endif
}
}
@@ -546,7 +598,7 @@ asmlinkage void trap_c(struct pt_regs *fp)
* Similar to get_user, do some address checking, then dereference
* Return true on sucess, false on bad address
*/
-bool get_instruction(unsigned short *val, unsigned short *address)
+static bool get_instruction(unsigned short *val, unsigned short *address)
{
unsigned long addr;
@@ -592,7 +644,7 @@ bool get_instruction(unsigned short *val, unsigned short *address)
#if L1_CODE_LENGTH != 0
if (addr >= L1_CODE_START && (addr + 2) <= (L1_CODE_START + L1_CODE_LENGTH)) {
- dma_memcpy(val, address, 2);
+ isram_memcpy(val, address, 2);
return true;
}
#endif
@@ -607,45 +659,48 @@ bool get_instruction(unsigned short *val, unsigned short *address)
* These are the normal instructions which cause change of flow, which
* would be at the source of the trace buffer
*/
-void decode_instruction(unsigned short *address)
+#ifdef CONFIG_DEBUG_VERBOSE
+static void decode_instruction(unsigned short *address)
{
unsigned short opcode;
if (get_instruction(&opcode, address)) {
if (opcode == 0x0010)
- printk("RTS");
+ verbose_printk("RTS");
else if (opcode == 0x0011)
- printk("RTI");
+ verbose_printk("RTI");
else if (opcode == 0x0012)
- printk("RTX");
+ verbose_printk("RTX");
else if (opcode >= 0x0050 && opcode <= 0x0057)
- printk("JUMP (P%i)", opcode & 7);
+ verbose_printk("JUMP (P%i)", opcode & 7);
else if (opcode >= 0x0060 && opcode <= 0x0067)
- printk("CALL (P%i)", opcode & 7);
+ verbose_printk("CALL (P%i)", opcode & 7);
else if (opcode >= 0x0070 && opcode <= 0x0077)
- printk("CALL (PC+P%i)", opcode & 7);
+ verbose_printk("CALL (PC+P%i)", opcode & 7);
else if (opcode >= 0x0080 && opcode <= 0x0087)
- printk("JUMP (PC+P%i)", opcode & 7);
+ verbose_printk("JUMP (PC+P%i)", opcode & 7);
else if ((opcode >= 0x1000 && opcode <= 0x13FF) || (opcode >= 0x1800 && opcode <= 0x1BFF))
- printk("IF !CC JUMP");
+ verbose_printk("IF !CC JUMP");
else if ((opcode >= 0x1400 && opcode <= 0x17ff) || (opcode >= 0x1c00 && opcode <= 0x1fff))
- printk("IF CC JUMP");
+ verbose_printk("IF CC JUMP");
else if (opcode >= 0x2000 && opcode <= 0x2fff)
- printk("JUMP.S");
+ verbose_printk("JUMP.S");
else if (opcode >= 0xe080 && opcode <= 0xe0ff)
- printk("LSETUP");
+ verbose_printk("LSETUP");
else if (opcode >= 0xe200 && opcode <= 0xe2ff)
- printk("JUMP.L");
+ verbose_printk("JUMP.L");
else if (opcode >= 0xe300 && opcode <= 0xe3ff)
- printk("CALL pcrel");
+ verbose_printk("CALL pcrel");
else
- printk("0x%04x", opcode);
+ verbose_printk("0x%04x", opcode);
}
}
+#endif
void dump_bfin_trace_buffer(void)
{
+#ifdef CONFIG_DEBUG_VERBOSE
#ifdef CONFIG_DEBUG_BFIN_HWTRACE_ON
int tflags, i = 0;
char buf[150];
@@ -701,6 +756,7 @@ void dump_bfin_trace_buffer(void)
trace_buffer_restore(tflags);
#endif
+#endif
}
EXPORT_SYMBOL(dump_bfin_trace_buffer);
@@ -708,7 +764,7 @@ EXPORT_SYMBOL(dump_bfin_trace_buffer);
* Checks to see if the address pointed to is either a
* 16-bit CALL instruction, or a 32-bit CALL instruction
*/
-bool is_bfin_call(unsigned short *addr)
+static bool is_bfin_call(unsigned short *addr)
{
unsigned short opcode = 0, *ins_addr;
ins_addr = (unsigned short *)addr;
@@ -730,8 +786,10 @@ bool is_bfin_call(unsigned short *addr)
return false;
}
+
void show_stack(struct task_struct *task, unsigned long *stack)
{
+#ifdef CONFIG_PRINTK
unsigned int *addr, *endstack, *fp = 0, *frame;
unsigned short *ins_addr;
char buf[150];
@@ -756,8 +814,10 @@ void show_stack(struct task_struct *task, unsigned long *stack)
} else
endstack = (unsigned int *)PAGE_ALIGN((unsigned int)stack);
+ printk(KERN_NOTICE "Stack info:\n");
decode_address(buf, (unsigned int)stack);
- printk(KERN_NOTICE "Stack info:\n" KERN_NOTICE " SP: [0x%p] %s\n", stack, buf);
+ printk(KERN_NOTICE " SP: [0x%p] %s\n", stack, buf);
+
addr = (unsigned int *)((unsigned int)stack & ~0x3F);
/* First thing is to look for a frame pointer */
@@ -848,7 +908,7 @@ void show_stack(struct task_struct *task, unsigned long *stack)
if (!j)
printk("\n");
}
-
+#endif
}
void dump_stack(void)
@@ -866,38 +926,39 @@ EXPORT_SYMBOL(dump_stack);
void dump_bfin_process(struct pt_regs *fp)
{
+#ifdef CONFIG_DEBUG_VERBOSE
/* We should be able to look at fp->ipend, but we don't push it on the
* stack all the time, so do this until we fix that */
unsigned int context = bfin_read_IPEND();
if (oops_in_progress)
- printk(KERN_EMERG "Kernel OOPS in progress\n");
+ verbose_printk(KERN_EMERG "Kernel OOPS in progress\n");
if (context & 0x0020 && (fp->seqstat & SEQSTAT_EXCAUSE) == VEC_HWERR)
- printk(KERN_NOTICE "HW Error context\n");
+ verbose_printk(KERN_NOTICE "HW Error context\n");
else if (context & 0x0020)
- printk(KERN_NOTICE "Deferred Exception context\n");
+ verbose_printk(KERN_NOTICE "Deferred Exception context\n");
else if (context & 0x3FC0)
- printk(KERN_NOTICE "Interrupt context\n");
+ verbose_printk(KERN_NOTICE "Interrupt context\n");
else if (context & 0x4000)
- printk(KERN_NOTICE "Deferred Interrupt context\n");
+ verbose_printk(KERN_NOTICE "Deferred Interrupt context\n");
else if (context & 0x8000)
- printk(KERN_NOTICE "Kernel process context\n");
+ verbose_printk(KERN_NOTICE "Kernel process context\n");
/* Because we are crashing, and pointers could be bad, we check things
* pretty closely before we use them
*/
if ((unsigned long)current >= FIXED_CODE_START &&
!((unsigned long)current & 0x3) && current->pid) {
- printk(KERN_NOTICE "CURRENT PROCESS:\n");
+ verbose_printk(KERN_NOTICE "CURRENT PROCESS:\n");
if (current->comm >= (char *)FIXED_CODE_START)
- printk(KERN_NOTICE "COMM=%s PID=%d\n",
+ verbose_printk(KERN_NOTICE "COMM=%s PID=%d\n",
current->comm, current->pid);
else
- printk(KERN_NOTICE "COMM= invalid\n");
+ verbose_printk(KERN_NOTICE "COMM= invalid\n");
if (!((unsigned long)current->mm & 0x3) && (unsigned long)current->mm >= FIXED_CODE_START)
- printk(KERN_NOTICE "TEXT = 0x%p-0x%p DATA = 0x%p-0x%p\n"
+ verbose_printk(KERN_NOTICE "TEXT = 0x%p-0x%p DATA = 0x%p-0x%p\n"
KERN_NOTICE " BSS = 0x%p-0x%p USER-STACK = 0x%p\n"
KERN_NOTICE "\n",
(void *)current->mm->start_code,
@@ -908,38 +969,40 @@ void dump_bfin_process(struct pt_regs *fp)
(void *)current->mm->brk,
(void *)current->mm->start_stack);
else
- printk(KERN_NOTICE "invalid mm\n");
+ verbose_printk(KERN_NOTICE "invalid mm\n");
} else
- printk(KERN_NOTICE "\n" KERN_NOTICE
+ verbose_printk(KERN_NOTICE "\n" KERN_NOTICE
"No Valid process in current context\n");
+#endif
}
void dump_bfin_mem(struct pt_regs *fp)
{
+#ifdef CONFIG_DEBUG_VERBOSE
unsigned short *addr, *erraddr, val = 0, err = 0;
char sti = 0, buf[6];
erraddr = (void *)fp->pc;
- printk(KERN_NOTICE "return address: [0x%p]; contents of:", erraddr);
+ verbose_printk(KERN_NOTICE "return address: [0x%p]; contents of:", erraddr);
for (addr = (unsigned short *)((unsigned long)erraddr & ~0xF) - 0x10;
addr < (unsigned short *)((unsigned long)erraddr & ~0xF) + 0x10;
addr++) {
if (!((unsigned long)addr & 0xF))
- printk("\n" KERN_NOTICE "0x%p: ", addr);
+ verbose_printk("\n" KERN_NOTICE "0x%p: ", addr);
- if (get_instruction(&val, addr)) {
+ if (!get_instruction(&val, addr)) {
val = 0;
sprintf(buf, "????");
} else
sprintf(buf, "%04x", val);
if (addr == erraddr) {
- printk("[%s]", buf);
+ verbose_printk("[%s]", buf);
err = val;
} else
- printk(" %s ", buf);
+ verbose_printk(" %s ", buf);
/* Do any previous instructions turn on interrupts? */
if (addr <= erraddr && /* in the past */
@@ -948,14 +1011,14 @@ void dump_bfin_mem(struct pt_regs *fp)
sti = 1;
}
- printk("\n");
+ verbose_printk("\n");
/* Hardware error interrupts can be deferred */
if (unlikely(sti && (fp->seqstat & SEQSTAT_EXCAUSE) == VEC_HWERR &&
oops_in_progress)){
- printk(KERN_NOTICE "Looks like this was a deferred error - sorry\n");
+ verbose_printk(KERN_NOTICE "Looks like this was a deferred error - sorry\n");
#ifndef CONFIG_DEBUG_HWERR
- printk(KERN_NOTICE "The remaining message may be meaningless\n"
+ verbose_printk(KERN_NOTICE "The remaining message may be meaningless\n"
KERN_NOTICE "You should enable CONFIG_DEBUG_HWERR to get a"
" better idea where it came from\n");
#else
@@ -969,34 +1032,47 @@ void dump_bfin_mem(struct pt_regs *fp)
/* And the last RETI points to the current userspace context */
if ((fp + 1)->pc >= current->mm->start_code &&
(fp + 1)->pc <= current->mm->end_code) {
- printk(KERN_NOTICE "It might be better to look around here : \n");
- printk(KERN_NOTICE "-------------------------------------------\n");
+ verbose_printk(KERN_NOTICE "It might be better to look around here : \n");
+ verbose_printk(KERN_NOTICE "-------------------------------------------\n");
show_regs(fp + 1);
- printk(KERN_NOTICE "-------------------------------------------\n");
+ verbose_printk(KERN_NOTICE "-------------------------------------------\n");
}
}
#endif
}
+#endif
}
void show_regs(struct pt_regs *fp)
{
+#ifdef CONFIG_DEBUG_VERBOSE
char buf [150];
struct irqaction *action;
unsigned int i;
unsigned long flags;
- printk(KERN_NOTICE "\n" KERN_NOTICE "SEQUENCER STATUS:\t\t%s\n", print_tainted());
- printk(KERN_NOTICE " SEQSTAT: %08lx IPEND: %04lx SYSCFG: %04lx\n",
+ verbose_printk(KERN_NOTICE "\n" KERN_NOTICE "SEQUENCER STATUS:\t\t%s\n", print_tainted());
+ verbose_printk(KERN_NOTICE " SEQSTAT: %08lx IPEND: %04lx SYSCFG: %04lx\n",
(long)fp->seqstat, fp->ipend, fp->syscfg);
- printk(KERN_NOTICE " HWERRCAUSE: 0x%lx\n",
- (fp->seqstat & SEQSTAT_HWERRCAUSE) >> 14);
- printk(KERN_NOTICE " EXCAUSE : 0x%lx\n",
+ if ((fp->seqstat & SEQSTAT_EXCAUSE) == VEC_HWERR) {
+ verbose_printk(KERN_NOTICE " HWERRCAUSE: 0x%lx\n",
+ (fp->seqstat & SEQSTAT_HWERRCAUSE) >> 14);
+#ifdef EBIU_ERRMST
+ /* If the error was from the EBIU, print it out */
+ if (bfin_read_EBIU_ERRMST() & CORE_ERROR) {
+ verbose_printk(KERN_NOTICE " EBIU Error Reason : 0x%04x\n",
+ bfin_read_EBIU_ERRMST());
+ verbose_printk(KERN_NOTICE " EBIU Error Address : 0x%08x\n",
+ bfin_read_EBIU_ERRADD());
+ }
+#endif
+ }
+ verbose_printk(KERN_NOTICE " EXCAUSE : 0x%lx\n",
fp->seqstat & SEQSTAT_EXCAUSE);
for (i = 6; i <= 15 ; i++) {
if (fp->ipend & (1 << i)) {
decode_address(buf, bfin_read32(EVT0 + 4*i));
- printk(KERN_NOTICE " physical IVG%i asserted : %s\n", i, buf);
+ verbose_printk(KERN_NOTICE " physical IVG%i asserted : %s\n", i, buf);
}
}
@@ -1009,64 +1085,65 @@ void show_regs(struct pt_regs *fp)
goto unlock;
decode_address(buf, (unsigned int)action->handler);
- printk(KERN_NOTICE " logical irq %3d mapped : %s", i, buf);
+ verbose_printk(KERN_NOTICE " logical irq %3d mapped : %s", i, buf);
for (action = action->next; action; action = action->next) {
decode_address(buf, (unsigned int)action->handler);
- printk(", %s", buf);
+ verbose_printk(", %s", buf);
}
- printk("\n");
+ verbose_printk("\n");
unlock:
spin_unlock_irqrestore(&irq_desc[i].lock, flags);
}
}
decode_address(buf, fp->rete);
- printk(KERN_NOTICE " RETE: %s\n", buf);
+ verbose_printk(KERN_NOTICE " RETE: %s\n", buf);
decode_address(buf, fp->retn);
- printk(KERN_NOTICE " RETN: %s\n", buf);
+ verbose_printk(KERN_NOTICE " RETN: %s\n", buf);
decode_address(buf, fp->retx);
- printk(KERN_NOTICE " RETX: %s\n", buf);
+ verbose_printk(KERN_NOTICE " RETX: %s\n", buf);
decode_address(buf, fp->rets);
- printk(KERN_NOTICE " RETS: %s\n", buf);
+ verbose_printk(KERN_NOTICE " RETS: %s\n", buf);
decode_address(buf, fp->pc);
- printk(KERN_NOTICE " PC : %s\n", buf);
+ verbose_printk(KERN_NOTICE " PC : %s\n", buf);
if (((long)fp->seqstat & SEQSTAT_EXCAUSE) &&
(((long)fp->seqstat & SEQSTAT_EXCAUSE) != VEC_HWERR)) {
decode_address(buf, saved_dcplb_fault_addr);
- printk(KERN_NOTICE "DCPLB_FAULT_ADDR: %s\n", buf);
+ verbose_printk(KERN_NOTICE "DCPLB_FAULT_ADDR: %s\n", buf);
decode_address(buf, saved_icplb_fault_addr);
- printk(KERN_NOTICE "ICPLB_FAULT_ADDR: %s\n", buf);
+ verbose_printk(KERN_NOTICE "ICPLB_FAULT_ADDR: %s\n", buf);
}
- printk(KERN_NOTICE "\n" KERN_NOTICE "PROCESSOR STATE:\n");
- printk(KERN_NOTICE " R0 : %08lx R1 : %08lx R2 : %08lx R3 : %08lx\n",
+ verbose_printk(KERN_NOTICE "\n" KERN_NOTICE "PROCESSOR STATE:\n");
+ verbose_printk(KERN_NOTICE " R0 : %08lx R1 : %08lx R2 : %08lx R3 : %08lx\n",
fp->r0, fp->r1, fp->r2, fp->r3);
- printk(KERN_NOTICE " R4 : %08lx R5 : %08lx R6 : %08lx R7 : %08lx\n",
+ verbose_printk(KERN_NOTICE " R4 : %08lx R5 : %08lx R6 : %08lx R7 : %08lx\n",
fp->r4, fp->r5, fp->r6, fp->r7);
- printk(KERN_NOTICE " P0 : %08lx P1 : %08lx P2 : %08lx P3 : %08lx\n",
+ verbose_printk(KERN_NOTICE " P0 : %08lx P1 : %08lx P2 : %08lx P3 : %08lx\n",
fp->p0, fp->p1, fp->p2, fp->p3);
- printk(KERN_NOTICE " P4 : %08lx P5 : %08lx FP : %08lx SP : %08lx\n",
+ verbose_printk(KERN_NOTICE " P4 : %08lx P5 : %08lx FP : %08lx SP : %08lx\n",
fp->p4, fp->p5, fp->fp, (long)fp);
- printk(KERN_NOTICE " LB0: %08lx LT0: %08lx LC0: %08lx\n",
+ verbose_printk(KERN_NOTICE " LB0: %08lx LT0: %08lx LC0: %08lx\n",
fp->lb0, fp->lt0, fp->lc0);
- printk(KERN_NOTICE " LB1: %08lx LT1: %08lx LC1: %08lx\n",
+ verbose_printk(KERN_NOTICE " LB1: %08lx LT1: %08lx LC1: %08lx\n",
fp->lb1, fp->lt1, fp->lc1);
- printk(KERN_NOTICE " B0 : %08lx L0 : %08lx M0 : %08lx I0 : %08lx\n",
+ verbose_printk(KERN_NOTICE " B0 : %08lx L0 : %08lx M0 : %08lx I0 : %08lx\n",
fp->b0, fp->l0, fp->m0, fp->i0);
- printk(KERN_NOTICE " B1 : %08lx L1 : %08lx M1 : %08lx I1 : %08lx\n",
+ verbose_printk(KERN_NOTICE " B1 : %08lx L1 : %08lx M1 : %08lx I1 : %08lx\n",
fp->b1, fp->l1, fp->m1, fp->i1);
- printk(KERN_NOTICE " B2 : %08lx L2 : %08lx M2 : %08lx I2 : %08lx\n",
+ verbose_printk(KERN_NOTICE " B2 : %08lx L2 : %08lx M2 : %08lx I2 : %08lx\n",
fp->b2, fp->l2, fp->m2, fp->i2);
- printk(KERN_NOTICE " B3 : %08lx L3 : %08lx M3 : %08lx I3 : %08lx\n",
+ verbose_printk(KERN_NOTICE " B3 : %08lx L3 : %08lx M3 : %08lx I3 : %08lx\n",
fp->b3, fp->l3, fp->m3, fp->i3);
- printk(KERN_NOTICE "A0.w: %08lx A0.x: %08lx A1.w: %08lx A1.x: %08lx\n",
+ verbose_printk(KERN_NOTICE "A0.w: %08lx A0.x: %08lx A1.w: %08lx A1.x: %08lx\n",
fp->a0w, fp->a0x, fp->a1w, fp->a1x);
- printk(KERN_NOTICE "USP : %08lx ASTAT: %08lx\n",
+ verbose_printk(KERN_NOTICE "USP : %08lx ASTAT: %08lx\n",
rdusp(), fp->astat);
- printk(KERN_NOTICE "\n");
+ verbose_printk(KERN_NOTICE "\n");
+#endif
}
#ifdef CONFIG_SYS_BFIN_SPINLOCK_L1
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-19 09:18:33 +0100